"I am always ready."
-Niculescu before criminals kill him
Niculescu is the main man behind the entire Syphon Filter conspiracy and is a major antagonist in Syphon Filter Omega Strain.
Background
Raised in the wealthy Niculescu Family which is among the most powerful European associations, Mihai ascended to CEO of Niculescu Funds, Ltd. and grew in power over the course of his life until becoming the third richest man in the world. His financial influence led to positions on numerous international boards including UN, NATO, and Olympic Councils. As he hid from the public, his desire to manipulate global affairs developed into connections with criminal forces and the plot to create the Syphon Filter virus.
Niculescu established the shadow corporation Meta Global Funds to direct all events in the operation. He orchastrated the takeover of several companies to participate in it, such as Pugari Mining in South Africa and Murakawa Industries from Japan. While other conspirators served the number two man Vincent Hadden, Niculescu kept his distance and directed events through Mara Aramov, the two having met at an unspecified time years ago.
Intelligence ties Niculescu and Mara to talks of assassinating the traitorous Mikhas Ivankov to recover the Omega Strain. Niculescu began a steady shutdown of his companies, including Murakawa, in effort to deter authorities. Despite being told by Alex Birchim to ignore Niculescu, Gabe Logan ordered a raid on Meta Global. The IPCA operation into Niculescu Funds returned evidence of his bank financing criminal enterprises such as the Anarchiste Libertaire Armee (ALA). An Agency virus disrupted the entire computer network which erased all accounts held with the company.
Niculescu permitted Ivankov to continue with an attack on Moscow in hopes of selling a viral antidote and profiting. He ignored Aramov's warnings that Ivankov acquired a nuclear weapon for the impending strike. The disagreement between them caused Niculescu to betray her, and Aramov in turn helped the Agency stop Ivankov.
Despite a lack of proof against Niculescu, authorities would not need to investigate since the criminals who lost money from his bank murdered him in his Zurich office as confirmed by local news reports.